IIDIDispatch
IIDIDispatch refers to the interface identifier (IID) for the IDispatch COM interface used in OLE Automation. An IID is a globally unique identifier that distinguishes one interface from another across components and processes.
In Windows COM, interfaces are identified by GUIDs, and IDispatch provides a standard late-binding mechanism that
The IID for IDispatch is {00020400-0000-0000-C000-000000000046}, typically defined in headers such as oaidl.h and oleidl.h as
Usage involves a client obtaining the IDispatch interface via QueryInterface with IID_IDispatch, retrieving type information from
IIDIDispatch is central to COM-based automation, facilitating cross-language interoperation and dynamic dispatch. Some environments extend IDispatch